JP2000011848A - Fuse holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the shaking of a fuse holder to a fixing base by providing a support claw for supporting a fuse tube in a position making contact with the fuse tube when the fuse tube is fixed to a fixed terminal. SOLUTION: The fuse tube supporting axis F by support claws 3 is shifted from a fuse tube fixing axis E, and the support claws 3 are provided in the position where the support claw 3 makes contact with a fuse tube 22 when the fuse tube 22 is fixed to a fuse tube fixing terminal 21. Namely, the fuse tube supporting axis F is conformed to the center axis of the fuse tube 22 when the fuse tube is supported by two support claws 3, and the fuse tube fixing axis E is conformed to the center axis of the fuse tube 22 when the fuse tube 22 is mounted and fixed onto a fuse tube fixing terminal 21. According to this, two support claws 3 are laid in elastically contact state with the fuse tube 22, and the elastic force of the fuse tube fixing terminal 21 acts on the fuse holder itself and works in the arrowed direction to lay the fuse holder in the state elastically pressed toward a circuit board 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse holder for electronic equipment.

[0002]

2. Description of the Related Art An example of a conventional fuse holder is shown in FIG.
To 15 are shown. The fuse holder 100 is configured to simultaneously and detachably attach a plurality of fuse tubes 22 to a fuse tube fixing terminal 21 formed of an elastic curved spring or the like standing upright on the circuit board 20 side of the electronic device. The configuration is such that a main body casing 1 having an open surface on one side, a storage recess 2 configured in the main body casing 1 to store a plurality of fuse tubes 22, and a support claw 3 supporting the fuse tubes 22.
And The inside of the main body housing 1 is partitioned at the center by a integrally formed partition portion 4, whereby a plurality of storage recesses 2 are formed adjacent to each other. Further, openings 5 are provided on the bottom surface 1t side opposite to the one surface opening portion 1b side of the main body housing portion 1 so as to correspond to each storage recess 2. The partition part 4 is formed in a state perpendicular to the bottom surface 1t. The fuse tube fixing terminal 21 holds the end of the fuse tube 22 so as to elastically clamp the end.

The support claws 3 are integrally formed on the surface of the partition 4. The support claw 3 is also provided on the surface of the storage recess 2 opposite to the partition 4, that is, on the inner surface 1 a side of the main body housing 1. That is, storage recess 2
, The supporting claws 3 are provided on both inner side surfaces thereof in a state of facing each other, and the supporting claw 3 provided on the partition 4 side and the supporting claw 3 provided on the surface on the opposite side are provided. The fuse tube 22 is supported as a pair as shown in FIG. 11B and FIG. Also,
Cut portions 1c are provided on both sides of the support claw 3 on the inner side surface portion 1a side of the main body housing portion 1, and both cut portions 1c,
The portion between 1c and 1c is configured to be elastically displaceable as an elastic displacement portion 1d. A support rib 6 is provided on the bottom surface 1t side of each storage recess 2 so as to correspond to the support claw 3. The two support claws 3 and the support rib 6 surround the fuse tube 22. It has become to support. In addition, a hooking edge 7 extending in parallel with the bottom surface 1t is provided on the outer side surface of the main body housing portion 1.

[0004] The fuse tube 22 is not fixed so as not to move by the support claws 3 and the support ribs 6.
From the viewpoint of preventing the fuse tube 22 from cracking and the like, the fuse tube 22 is supported so as to be movable to some extent in a state surrounded by the support claws 3 and the support ribs 6. Also, as shown in FIG.
When the plurality of fuse tubes 22 and the fuse holder 100 are attached to the fuse tube fixing terminals 21 erected on the circuit board 20, both ends of the fuse tubes 22 are elastically fixed to the fuse tube fixing terminals 21, respectively. 2
The fuse holder 100 is attached to the circuit board 20 via the fuse tube 22 fixed to the circuit board 20.

When the fuse tube 22 is detached from the fuse holder 100 in the above-described configuration, a tool such as a screwdriver or a ballpoint pen is inserted through the opening 5 to push out the fuse tube 22 in the storage recess 2 so that the elasticity of the fuse tube 22 is reduced. The displacing portion 1d and its supporting claw 3 are slightly elastically displaced, so that the fuse tube 22 gets over the gap between the supporting claws 3 and 3, and the fuse tube 22 can be taken out of the storage recess 2.

When a plurality of fuse tubes 22 and a fuse holder 100 are attached to a fuse tube fixing terminal 21 erected on a circuit board 20, two support claws 3, 3 are formed in a storage recess 2 of the fuse holder 100. The fuse tubes 22 are fitted and mounted in the spaces between the support ribs 6, respectively, and the entire fuse holder 100 is pressed against the fuse tube fixing terminals 21. As a result, both ends of each fuse tube 22 are elastically fixed to the corresponding fuse tube fixing terminal 21, so that a plurality of fuse tubes 22 can be simultaneously attached to the fuse tube fixing terminal 21 as shown in FIG.

When removing the plurality of fuse tubes 22 and the fuse holder 100 from the fuse tube fixing terminal 21 erected on the circuit board 20 from the state of FIG. 14, a finger or the like is put on the hooking edge 7. 15, the fixing portion between one end of the fuse tube 22 and the fuse tube fixing terminal 21 located on the side opposite to the hooking edge 7 serves as a fulcrum. When the other end of the fuse tube 22 located on the same side as the edge 7 and the fuse tube fixing terminal 21 are released from the elastic fixed state, and further pulled in the direction of the arrow in FIG. The elastically fixed state between the one end of the fuse tube 22 and the fuse tube fixing terminal 21 located on the opposite side is released.

[0008]

In the above-mentioned prior art, the fuse tube 22 is not fixed to each support claw 3 but is somewhat surrounded by each support claw 3 and the support rib 6. As shown in FIG. 13 (enlarged view around the area C in FIG. 12), the plurality of fuse tubes 22 and the fuse holder 100 are fixed to the fuse tube fixing terminal 21 as shown in FIG. Is attached, the fuse tube 22 and the fuse holder 100 are not fixed to each other even though the fuse tube 22 is firmly fixed to the fuse tube fixing terminal 21, so that the fuse holder 100 is mounted on the circuit board 20. There was a problem of rattling. Therefore, for example, in an electronic device or the like equipped with a vibration component such as a speaker, the vibration of the speaker causes the fuse holder 100 to vibrate, which affects the function of the electronic device. In some cases, it had an adverse effect.

The present invention has been made in view of the above-described problems of the present invention, and provides a fuse holder configured to prevent the fuse tube from rattling against a circuit board when the fuse tube is attached to a fuse tube fixing terminal. The purpose is to do.

[0010]

According to the first aspect of the present invention, there is provided a fuse holder for removably attaching a fuse tube to a fuse tube fixing terminal on a circuit board side. It has a storage recess for storing and fixing the tube, and a support claw for supporting the fuse tube, and a support claw is provided on each of inner sides of the storage recess, and the support claw is fixed when the fuse tube is fixed to the fixed terminal. A support claw is provided at a position in contact with the fuse tube.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, the same components as those in the related art are denoted by the same reference numerals in the drawings, and the description of the related art is referred to as it is, and the description in this section is omitted.

The fuse holder A of this embodiment is significantly different from the fuse holder 100 of the prior art described above. (1) A part of the partition part 4 is made to be in a state where the fuse tube 22 can be elastically displaced in the adjacent direction. (2) that the support claw 3 provided on the partition part 4 side can be elastically displaced;
When the fuse tube 22 is fixed to the fuse tube fixing terminal 21, the support claw 3 is located at a position where the support claw 3 contacts the fuse tube 22.
Is provided. Others are the same as the above-mentioned prior art.

An example of the fuse holder A of the present embodiment is shown in FIGS. In the fuse holder A, similarly to the fuse holder 100 of the related art,
Cut portions 1c are provided on both sides of the support claw 3 on the inner side surface portion 1a side of the main body housing portion 1, and a portion between the cut portions 1c, 1c is formed as an outer elastic displacement portion 1d so as to be elastically displaceable. It is. Cut portions 4a are also provided on both sides of the support claw 3 on the partition portion 4 side.
The inner elastic displacement portion 4b is provided between the a and 4a so as to be elastically displaceable. That is, the notches 1c and 4a are provided on both sides of each of the storage recesses 2 so that the elastic displacement portions 1d and 4 are provided on both sides of each of the storage recesses 2 respectively.
b is provided, and both of the support claws 3 are formed so as to be elastically displaceable at the same time.

The fuse tube 22 is not fixed to each support claw 3 as in the above-mentioned prior art, but is formed by each support claw 3 and the support rib 6 from the viewpoint of preventing the fuse tube 22 from cracking or the like. It is supported with a margin to be able to move freely to some extent in the enclosed state. Therefore, the inner elastic displacement portion 4b is elastically displaced in the direction in which the storage recesses 2 are adjacent to each other (the direction of the double arrow in FIG. 3) by a margin between the fuse tube 22 and each of the support claws 3 and the support ribs 6. Can be done.

In this configuration, when removing the plurality of fuse tubes 22 and the fuse holder A from the fuse tube fixing terminals 21 erected on the circuit board 20, place a finger or the like on the hooking edge 7 in FIG. When pulled in the arrow direction, one end 2 of the fuse tube 22 located on the opposite side to the hooking edge 7
A fixing portion between the fuse tube fixing terminal 2a1 and the fuse tube fixing terminal 21 serves as a fulcrum. First, the other end 22a2 of the fuse tube 22 and the fuse tube fixing terminal 21 which are located on the same side as the hooking edge portion 7 are fixed. When the state is released and further pulled in the direction of the arrow in FIG. 10, the fixed state between the one end 22 a 1 of the fuse tube 22 located on the fulcrum side and the side opposite to the hooking edge 7 and the fuse tube fixing terminal 21 is released. It has become. In this respect, the point is the same as that of the conventional technique, but the notch 4a is provided in the partition 4 and the inner elastic displacement portion 4b is provided as in the present embodiment, so that the support claws 3 of the partition 4 move. However, since the fuse tubes 22 are attached to the respective housing recesses 2, when removing the plurality of fuse tubes 22 and the fuse holder A from the fuse tube fixing terminal 21, both the fuses are required for the inner elastic displacement portion 4 b. Tube 2
At this time, the inner elastically displaceable portion 4b is in a state where it cannot be elastically displaced because balanced forces acting to cancel each other are exerted by the second and second components. That is, since each of the fuse tubes 22 in each of the storage recesses 2 and 2 is firmly supported by the support claws 3, the plurality of fuse tubes 2
When removing the fuse holder 2 and the fuse holder A, the fuse tube 22 does not come off from the fuse holder A.

On the other hand, when the fuse tube 22 is to be removed from the fuse holder A, a tool such as a screwdriver or a ball-point pen is inserted through the opening 5 to push out the fuse tube 22 in the storage recess 2 so that the inner elastic displacement portion 4 b Support claw 3 on the side and support claw 3 on the outer elastic displacement portion 1d side
Are elastically displaced simultaneously and away from each other to widen the gap between the two support claws 3, 3, and the fuse tube 22 rides over the gap between the two support claws 3, 3, and moves the fuse tube 22 from the housing recess 2. It can be easily taken out.

That is, conventionally, only the support claw 3 on the side of the outer elastic displacement portion 1d can be elastically displaced. Therefore, the fuse tube 22 can be easily removed from the housing recess 2 only by displacement of the rigid elastic outer elastic displacement portion 1d. Although it is impossible to do so, and if it is bad, the fuse tube 22 is often broken and broken, but in this embodiment, the outer elastic displacement portion 1
Since the support claw 3 on the d side and the support claw 3 on the inner elastic displacement portion 4b side can be elastically displaced at the same time, when inserting a tool such as a screwdriver or a ballpoint pen from the opening 5 to push out the fuse tube 22 in the storage recess 2, As a result, the gap between the pair of support claws 3 can be widened with a smaller amount of force, and the fuse tube 22 can be easily removed from the storage recess 2. Even if this configuration is adopted, when the plurality of fuse tubes 22 and the fuse holder A are detached from the fuse tube fixing terminal 21 for the above-described reason, the fuse tube 22 does not come off from the accommodation recess 2 and the fuse tube 22 does not come off. The fuse tube 22 and the fuse holder A can be easily removed without deteriorating the basic performance of the holder A.

Incidentally, the fuse holder 1 of the prior art described above.
In the case of 00, if the cut portion 1c is deepened and the length of the outer elastic displacement portion 1d is configured to be longer, the elastic displacement becomes easier by that much, but the fuse holder 100 itself becomes larger accordingly. However, according to the configuration of the present embodiment, the above-mentioned effect can be sufficiently exerted without deepening the cut portion 1c and lengthening the outer elastic displacement portion 1d, and consequently contributing to downsizing of the fuse holder A itself. I have.

Further, as shown in FIG. 1, the fuse tube supporting shaft F (marked by X in FIG. 1) by the support claws 3 is shifted from the fuse tube fixing shaft E (marked by ○ in FIG. 1) by the fuse tube fixing terminal 21. As shown in FIGS. 1 and 2, the support claws 3 are provided at positions where the support claws 3 contact the fuse tubes 22 when the fuse tubes 22 are fixed to the fuse tube fixing terminals 21. Note that the fuse tube support shaft F (marked by X in FIG. 1) is when the fuse tube 22 is supported by the two support claws 3 and 3 (for example, FIG.
The state shown in (b). In this case, the two fuse tubes 22 are in contact with the support claws 3 and are not in contact with the support ribs 6). Correspond to the central axes of the fuses 22 when the fuses 22 are fixed to the fuse tube fixing terminals 21, respectively. That is, in the case of the conventional example, when the plurality of fuse tubes 22 and the fuse holder A are attached to the fuse tube fixing terminals 21 erected on the circuit board 20, the fuse tube supporting shaft F and the fuse tube fixing shaft E
Although they were consistent with each other, in the present embodiment,
As shown in FIG. 1, the fuse tube support shaft F and the fuse tube fixing shaft E are shifted from each other, and the fuse tube support shaft F is slightly shifted from the fuse tube fixing shaft E toward the bottomed surface 1t. In other words, the supporting claw 3 is slightly smaller than the conventional example.
That is, they are arranged to be shifted to the side. Thus, in a state where the plurality of fuse tubes 22 and the fuse holder A are attached to the fuse tube fixing terminal 21, as shown in FIG. 2, the two support claws 3 and 3 are in elastic contact with the fuse tube 22 ( 2, the elastic force of the fuse tube fixing terminal 21 acts on the fuse holder A itself, and the elastic force acts in the direction of the arrow in FIG. Thus, the state is pressed. That is, fuse holder A
As such, it is firmly and elastically fixed to the circuit board 20 and rattling is eliminated. Note that the configuration shown in FIGS. 1 and 2 is not limited to a fuse holder that stores a plurality of fuse tubes 22, but can be employed in a type of fuse holder that stores only one fuse tube 22.

In the above embodiment, the notches 1 are formed on both sides of the support claw 3 on the inner side surface 1a of the main body casing 1.
Even if the portion of the outer elastic displacement portion 1d is not provided without providing the c, only the cut portion 4a on the partition portion 4 side is provided, and only the inner elastic displacement portion 4b is provided, so that the support claw 3 can be elastically displaced. Alternatively, the effects of the present application can be achieved. However, if both the outer elastic displacement portion 1d and the inner elastic displacement portion 1d are provided at the same time, the fuse tube 22 can be connected to the fuse holder A.
When the fuse tube 22 is detached, the displacement amount of each support claw 3 can be dispersed between the outer elastic displacement portion 1d and the inner elastic displacement portion 1d, so that the fuse tube 22 can be easily removed.

Further, notches 4b are provided on both sides of the support claw 3 of the partition 4 so that only a part of the partition 4 (the inner elastic displacement portion 4b) can be elastically displaced. The entire part 4 may be formed in a state where it can be elastically displaced so as to be displaceable. Further, the number of the storage recesses 2 is not limited to two, and three or more storage recesses 2 may be provided adjacent to each other. In this case, both sides of the storage concave portion 2 become the partition portions 4 and the cut portions 4a
Are provided on both sides of the storage recess 2.

[0022]

According to the first aspect of the present invention, when a plurality of fuse tubes and a fuse holder are mounted on a circuit board, the elastic force of the fuse tube fixing terminals causes the fuse holder to be pressed against the circuit board. Because of the function, it is possible to prevent the fuse holder from rattling.

[Brief description of the drawings]

FIG. 1 is a partially enlarged cross-sectional view showing a mounting state of a fuse tube 22 and a circuit board 20 in a fuse holder A according to an embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view showing a mounting state of the fuse tube 22 and a circuit board 20 in the same. (Enlarged view of range B in FIG. 1)

FIG. 3 is a bottom perspective view showing the fuse holder A according to the first embodiment.

FIG. 4 is an exploded perspective view showing the relationship among the fuse holder A, the fuse tube 22, and the circuit board 20 in the above.

5A and 5B are a bottom perspective view of the fuse holder A and a front sectional view showing a mounting state of the fuse tube 22 in the same.

FIG. 6 is a top view of the fuse holder A in FIG.

7A is a front sectional view of the fuse holder A, and FIG. 7B is a front sectional view showing a mounting state of the fuse tube 22 and the circuit board 20.

FIG. 8 is a side sectional view (a) and a bottom view (b) of the fuse holder A in FIG.

FIG. 9 is a side sectional view showing an attached state of the fuse tube 22 and the circuit board 20 in the above.

FIG. 10 is a side sectional view showing a process of removing the fuse tube 22 and the fuse holder A from the fuse tube fixing terminal 21 in the above.

11A is a bottom perspective view of a fuse holder 100 according to the related art, and FIG. 11B is a front cross-sectional view illustrating a state where a fuse tube 22 is attached.

FIG. 12 shows a fuse tube 22 and a circuit board 20 in the same as above.
FIG. 4 is an enlarged partial cross-sectional view showing a state of attachment.

FIG. 13 shows the fuse tube 22 and the circuit board 20 in the same as above.
FIG. 4 is an enlarged partial cross-sectional view showing a state of attachment. (Enlarged view of range C in FIG. 12)

FIG. 14 shows a fuse tube 22 and a circuit board 20 in the same as above.
FIG. 6 is a side sectional view showing a mounting state of the above.

FIG. 15 is a side sectional view showing a process of removing the fuse tube 22 and the fuse holder 100 from the fuse tube fixing terminal 21 in the same as above.

[Explanation of symbols]

 Reference Signs List A fuse holder 1c cut portion 1d outer elastic displacement portion 2 storage recess 3 support claw 4 partition portion 4a cut portion 4b inner elastic displacement portion 20 circuit board 21 fuse tube fixing terminal 22 fuse tube

Claims (1)

[Claims] 1. A fuse holder for detachably mounting a fuse tube to a fuse tube fixing terminal on a circuit board side, comprising: a housing recess for housing and fixing the fuse tube;
And a support claw for supporting the fuse tube, wherein the support claw is provided on both inner sides of the storage recess, and the support claw is located at a position where the support claw contacts the fuse tube when the fuse tube is fixed to the fixed terminal. Fuse holder characterized by having provided.